ASCERTAIN • DICTIONARY ONE.COM • Definition of Ascertain

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/ˌæsərtˈeɪn/ Listen

Ascertain

verb

(past & past part. ascertained; pres. part. ascertaining)

Establish after a calculation, investigation, experiment, survey, or study. Synonyms: determine, find, find out. "The physicist who found the elusive particle won the Nobel Prize"

Be careful or certain to do something; make certain of something. Synonyms: assure, check, control, ensure, insure, see, see to it. "See that the curtains are closed" , "Control the quality of the product"

Find out, learn, or determine with certainty, usually by making an inquiry or other effort. Synonyms: check, determine, find out, learn, see, watch. "See whether it works" , "Find out if he speaks Russian" , "Check whether the train leaves on time"

Learn or discover with certainty.

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Etymology of 'Ascertain'

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"Ascertain" Quotes from Famous Books

... been given to the words "God is a Spirit, and they that worship him must worship him in spirit and in truth." The reason of man was at last able to study the scheme of the universe, of which he is a part, and to ascertain the actual laws by which it is governed. Three centuries and a half have elapsed since Copernicus revolutionized astronomy. It is only by reflecting on the mass of knowledge we have since acquired, ...

— The Great Events by Famous Historians, Volume 07 • Various

... however, what is according to his nature. But I know; for this reason I behave towards him according to the natural law of fellowship with benevolence and justice. At the same time, however, in things indifferent I attempt to ascertain the value ...

— The Thoughts Of The Emperor Marcus Aurelius Antoninus • Marcus Aurelius

... after having given a full account of his discoveries, and answered all Johnny's questions, "I believe it is just noon, and while I think of it, I will try to ascertain our longitude." ...

— The Island Home • Richard Archer

... unmixed pleasure. The eclat of her reputation soon destroyed her incognito, while the sums of money she was supposed to receive for her works attracted to her innumerable beggars and adventurers of all sorts. To ascertain the real wants and character of those who in every imaginable way claimed her assistance became one of the added labors of her life. She visited wretched garrets or cellars, and saw miserable families,—discovering often, ...

— Atlantic Monthly, Volume 8, Issue 49, November, 1861 • Various

... now news might come at any time that Hugh was wounded and missing. Then he set himself to persuade Cissie that the absence of "seriously" meant that Teddy was only quite bearably wounded, and that if he was also "missing" it might be difficult for the War Office to ascertain at once just exactly what she wanted to know. But Cissie said merely that "Letty was in an awful state," and after Mr. Britling had given her a few instructions for his typing, he went down to the cottage to repeat these mitigatory ...

— Mr. Britling Sees It Through • H. G. Wells

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